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boards/risc-v/esp32[c3|c6|h2]: Add I2C slave support

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Add I2C slave support into board layer for risc-v based Espressif devices

Signed-off-by: Eren Terzioglu <eren.terzioglu@espressif.com>
This commit is contained in:
Eren Terzioglu
2025-02-26 09:33:02 +01:00
committed by Alin Jerpelea
parent 59fe350708
commit 939b31b97e
3 changed files with 130 additions and 8 deletions
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boards/risc-v/esp32c3/common/src/esp_board_i2c.c
+43 -3
View File
@@ -35,9 +35,21 @@
#ifdef CONFIG_ESPRESSIF_I2C_BITBANG
#include "espressif/esp_i2c_bitbang.h"
#endif
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_MASTER_MODE
#include "espressif/esp_i2c.h"
#endif
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_SLAVE_MODE
#include "espressif/esp_i2c_slave.h"
#endif
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_SLAVE_MODE
#define I2C0_SLAVE_ADDR 0x28
#define I2C0_SLAVE_NBITS 7
#endif
/****************************************************************************
* Public Functions
@@ -66,7 +78,7 @@ static int i2c_bitbang_driver_init(int bus)
}
#endif
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_MASTER_MODE
static int i2c_driver_init(int bus)
{
struct i2c_master_s *i2c;
@@ -90,6 +102,30 @@ static int i2c_driver_init(int bus)
}
#endif
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_SLAVE_MODE
static int i2c_slave_driver_init(int bus, int addr)
{
struct i2c_slave_s *i2c;
int ret;
i2c = esp_i2cbus_slave_initialize(bus, addr);
if (i2c == NULL)
{
i2cerr("Failed to get I2C%d interface\n", bus);
return -ENODEV;
}
ret = i2c_slave_register(i2c, bus, addr, I2C0_SLAVE_NBITS);
if (ret < 0)
{
i2cerr("Failed to register I2C%d driver: %d\n", bus, ret);
esp_i2cbus_slave_uninitialize(i2c);
}
return ret;
}
#endif
/****************************************************************************
* Name: board_i2c_init
*
@@ -106,7 +142,7 @@ int board_i2c_init(void)
{
int ret = OK;
#ifdef CONFIG_ESPRESSIF_I2C0
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_MASTER_MODE
ret = i2c_driver_init(ESPRESSIF_I2C0);
#endif
@@ -114,5 +150,9 @@ int board_i2c_init(void)
ret = i2c_bitbang_driver_init(ESPRESSIF_I2C_BITBANG);
#endif
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_SLAVE_MODE
ret = i2c_slave_driver_init(ESPRESSIF_I2C0_SLAVE, I2C0_SLAVE_ADDR);
#endif
return ret;
}
boards/risc-v/esp32c6/common/src/esp_board_i2c.c
+43 -3
View File
@@ -35,9 +35,21 @@
#ifdef CONFIG_ESPRESSIF_I2C_BITBANG
#include "espressif/esp_i2c_bitbang.h"
#endif
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_MASTER_MODE
#include "espressif/esp_i2c.h"
#endif
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_SLAVE_MODE
#include "espressif/esp_i2c_slave.h"
#endif
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_SLAVE_MODE
#define I2C0_SLAVE_ADDR 0x28
#define I2C0_SLAVE_NBITS 7
#endif
/****************************************************************************
* Public Functions
@@ -66,7 +78,7 @@ static int i2c_bitbang_driver_init(int bus)
}
#endif
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_MASTER_MODE
static int i2c_driver_init(int bus)
{
struct i2c_master_s *i2c;
@@ -90,6 +102,30 @@ static int i2c_driver_init(int bus)
}
#endif
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_SLAVE_MODE
static int i2c_slave_driver_init(int bus, int addr)
{
struct i2c_slave_s *i2c;
int ret;
i2c = esp_i2cbus_slave_initialize(bus, addr);
if (i2c == NULL)
{
i2cerr("Failed to get I2C%d interface\n", bus);
return -ENODEV;
}
ret = i2c_slave_register(i2c, bus, addr, I2C0_SLAVE_NBITS);
if (ret < 0)
{
i2cerr("Failed to register I2C%d driver: %d\n", bus, ret);
esp_i2cbus_slave_uninitialize(i2c);
}
return ret;
}
#endif
/****************************************************************************
* Name: board_i2c_init
*
@@ -106,7 +142,7 @@ int board_i2c_init(void)
{
int ret = OK;
#ifdef CONFIG_ESPRESSIF_I2C0
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_MASTER_MODE
ret = i2c_driver_init(ESPRESSIF_I2C0);
#endif
@@ -114,5 +150,9 @@ int board_i2c_init(void)
ret = i2c_bitbang_driver_init(ESPRESSIF_I2C_BITBANG);
#endif
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_SLAVE_MODE
ret = i2c_slave_driver_init(ESPRESSIF_I2C0_SLAVE, I2C0_SLAVE_ADDR);
#endif
return ret;
}
boards/risc-v/esp32h2/common/src/esp_board_i2c.c
+44 -2
View File
@@ -35,9 +35,21 @@
#ifdef CONFIG_ESPRESSIF_I2C_BITBANG
#include "espressif/esp_i2c_bitbang.h"
#endif
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_MASTER_MODE
#include "espressif/esp_i2c.h"
#endif
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_SLAVE_MODE
#include "espressif/esp_i2c_slave.h"
#endif
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_SLAVE_MODE
#define I2C0_SLAVE_ADDR 0x28
#define I2C0_SLAVE_NBITS 7
#endif
/****************************************************************************
* Public Functions
@@ -66,7 +78,7 @@ static int i2c_bitbang_driver_init(int bus)
}
#endif
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_MASTER_MODE
static int i2c_driver_init(int bus)
{
struct i2c_master_s *i2c;
@@ -90,6 +102,30 @@ static int i2c_driver_init(int bus)
}
#endif
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_SLAVE_MODE
static int i2c_slave_driver_init(int bus, int addr)
{
struct i2c_slave_s *i2c;
int ret;
i2c = esp_i2cbus_slave_initialize(bus, addr);
if (i2c == NULL)
{
i2cerr("Failed to get I2C%d interface\n", bus);
return -ENODEV;
}
ret = i2c_slave_register(i2c, bus, addr, I2C0_SLAVE_NBITS);
if (ret < 0)
{
i2cerr("Failed to register I2C%d driver: %d\n", bus, ret);
esp_i2cbus_slave_uninitialize(i2c);
}
return ret;
}
#endif
/****************************************************************************
* Name: board_i2c_init
*
@@ -106,6 +142,7 @@ int board_i2c_init(void)
{
int ret = OK;
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_MASTER_MODE
#ifdef CONFIG_ESPRESSIF_I2C0
ret = i2c_driver_init(ESPRESSIF_I2C0);
if (ret != OK)
@@ -117,10 +154,15 @@ int board_i2c_init(void)
#ifdef CONFIG_ESPRESSIF_I2C1
ret = i2c_driver_init(ESPRESSIF_I2C1);
#endif
#endif
#ifdef CONFIG_ESPRESSIF_I2C_BITBANG
ret = i2c_bitbang_driver_init(ESPRESSIF_I2C_BITBANG);
#endif
#ifdef CONFIG_ESPRESSIF_I2C_PERIPH_SLAVE_MODE
ret = i2c_slave_driver_init(ESPRESSIF_I2C0_SLAVE, I2C0_SLAVE_ADDR);
#endif
return ret;
}